let's talk about it with shall bshannonbream. she's live in washington. any sign any of the current justices might be thinking about leaving the bench? >> reporter: we always say it's one of the best-kept secrets in washington. here's what we do know. four of the justices are well into their 70s with ruth bader ginsburgh set to turn 80 in month, none of them giving any public hints about stepping down from the bench. we usually expect retirement announcements at the end of the court's term in june. speculation will ramp up just as it does every year. the court watchers are wondering what the president will do with his next pick if he gets one in the next four years. >> if he's fighting hard for gun control, for immigration reform, for whatever else is on his agenda, he may say i don't want to spend my political capital trying to push through a liberal nominee through the court. it's better spent elsewhere. i can nominate someone who is well guarded along both sides of the aisles. >> reporter: any of his nominees will have to make it through the senate in